Heavy Weight Drill Pipe

HWDP include:  
Integral HWDP (3 1/2” – 6 5/8”),
Integral Spiral HWDP (3 1/2” - 5”)
Friction Welding HWDP
 (3 1/2” to 6 5/8”).
 


Technical Parameter

Size Range in	OD in	ID in	Joint OD in	Joint ID in	Connection	Elevator OD Max. in	Mid. Upset Dia. in	Drift OD Min. in
3 1/2	3 1/2	2 1/4	4 3/4 (4 7/8, 5)	2 1/4	NC38	3 7/8	4	2
		2 1/16		2 1/16				1 13/16
4	4	2 1/2	5 1/4	2 1/2	NC40	4 3/16	4 1/2	2 1/4
		2 9/16		2 9/16				2 5/16
4 1/2	4 1/2	2 11/16	6 1/4	2 11/16	NC46	4 11/16	5	2 7/16
		2 3/4		2 3/4				2 1/2
		2 13/16		2 13/16				2 9/16
5	5	3	6 5/8	3	NC50	5 1/8	5 1/2	2 3/4
5 1/2	5 1/2	3 1/4	7 (7 1/4, 7 1/2)	3 1/4	5 1/2 FH	5 11/16	6	3
		3 3/8		3 3/8				3 1/8
		3 7/8		3 7/8				3 5/8
		4		4				3 3/4
6 5/8	6 5/8	4	8 (8 1/4, 8 1/2)	4	6 5/8 FH	6 15/16	7 1/8	3 3/4
		4 1/2		4 1/2				4 1/4
		5		5				4 3/4

 
Integral HWDP Material AISI 4145H
 Welded HWDP Joint Material AISI 4145H，Welded HWDP Body Material AISI1340
Hardbanding: Arnco 100XT、 Arnco 300XT、BoTn 1000、BoTn 3000
Internal Plastic Coating: TC2000、DPC2000、、TK34、TK34P